Gas engine



Nov. 18, 1 24- 1,515,946

J H. GILES GAS ENGINE Filed July 30. 1923 2 Sheets-Sheet 1 of}? G2; 2 INVENTOR WITNESS 5 ATTORNEY Nov. 18, 1924. I 1,515,946

J. H. GILES GAS ENGINE Filed July 30, 1923 2 S)|eet:-3-Shee"- 2 LILIIBLILIUJ Patented Nov. 18, 1924.

UNITED STATES 1,515,946 PATENT OFFICE.

JESSE H. GILES, OF OGDEN. UTAH, ASSlIC-i-NOR TO MOTOR COMPANY, OF OGDEN CITY. UTAITI, OGRFQT JTGLN OF UT/IiH.

GAS ENGINE.

To a l 'm/iomit may concern:

Be it known that I, Jnssn H. (El-Inns, a citizen of the United States, residing Ogden, in the county of Weber and State of Utah, have invented new and useful lur provelnents in Engines, of which i he following is a specification.

This invention relates to engines, and has for its chief characteristic, a construction wherein the cylinder is offset with respect to the crank shaft to produce a maximum power, inasmuch as the piston is allowed to t 'avel a greater distance than. the distracts of the orbit of the crank and to also obviate sudden jars to which the bearings and crank shafts are usually subjected. The construc tion also eliminates back firing, side pressure of the piston on the walls of the cylinder, and also affords greater compression, and minimizes the possibility of fouling the plug by the lubricant which is thrown into the cylinder by the operation of the motor.

In carrying out the invention, I also provide rotary intake and exhaust valves, which are operated by means actimted from the crank shaft.

The nature and advantages of the inven tion will be better understood when the following detailed description is read in connection with the accompanying drawings, the invention residing in the construction, combination, and arrangement of parts as claimed.

In the drawings forming part of this application, like numerals of reference indicate similar parts in the several views, and wherein:

Figure 1 is a vertical sectional view through a cylinder, showing the relative position of the crank shaft with relation to the cylinder, and the various positions of the piston and connecting rod.

Figure 2 is a sectional view, showing the operating means for the valves.

Figure 3 is a detail view of one of the valves.

Referring to the drawings in detail, 10 indicates a cylinder which is surrounded by the usual water jacket 11, the piston 12 being arranged to reciprocate within the cylinder and connected with the crank shaft 18 by the usual connecting rod 1 1. As above stated, the chief characteristic of the present invention resides in having the cylinder 10 offset with regard to the crank shaft 13,

Serial 1T0. 654,?16.

and as clearly illustrated in Figure 1,, the center line of the crank shaft is arranged in a direct line with the center wall. of the cvlinder, providing an offset, distinct from the longitudinal center of the cylinder equal to the length of the crank portion of the shaft 1 1. This construction possesses very many advantages over the usual construction of engines, where the crank shaft is ranged in a direct line with the longitudinal center of the cylinder, the most important of which resides in the fact that the piston has a greater power stroke, being allowed to travel a greater distance than the dianr cter of the orbit of the crank. It also provides for increased compression, and minimizes the possibility of the oil or lubricant being thrown into the cylinder in a manner to allow it to work past the piston with a consequent fouling of the plug. The full line position of the piston in Figure 1 illustrates the completion of the compression stroke and in this position of the piston, it will be noted that the crank end of the connecting rod has passed over dead center, so that the full force of the explosion is applied to the moving parts in a manner to eliminate sudden pounding 0r jar on the bearings and crank shaft, and the resultantuneven wear of the latter. When the connccting rod 14 is arranged as illustrated by dotted lines in Figure 1, at 180 to the crank portion 15 of the shaft, only approximately threeeighths of the power stroke has been utilized, and the remaining five-eighths applied at a time which affords one-hundred per cent efficiency to the power stroke. The power stroke is completed when the piston assumes the position illustrated by dotted lines in Figure 1, and in this position, the piston has travelled a greater distance than the diameter of the orbit of the crank, which is made possible by offsetting the cylinder in the manner described. l Vhen the exhaust valve opens at this time to clear the cylinders of the burnt gases, the piston is re turned to the position illustrated by full lines in Figure 1.

arranged in the head of the cylinder are two rotary valves, between which is positioned the spark plug 17. Each of the valves 18 and 19 operate within a cylindrical casing 20 which is provided with ports 21 and 22 respectively. The valve 18 controls the inlet of the fuel to the cylinders, while the valve119 controlsthe exhaust of the burnt gases therefrom, and each of these valves is provided with ports 24: which are arranged to pass the ports 21 and 22 of their respective casings at predetermined intervals. The ports 24 of the valves are of considerable length, so that the burnt gases'w'ill be completely exhausted from the cylinder at the proper time. The valves 18 and 19 are arranged to rotate toward each other as indicated by the arrows in Figure 1, and for controlling the movements of these valves, 1 provide a vertically disposed shaft 25 equipped with a worm gear at its lower end and which gear is indicated at 26. The

, gear 26 meshes with a Worm gear 27 carried by the crank shaft- 13 to rotate the shaft 125, anda-fter the shaft 25 is positioned be- .tweenthe valves 18 and 19 respectively and 1 geared'thereto, the said valves are rotated ..in a manner [described Each valve is r. equipped with aggear 28 which meshes with a wormgean29 carried by the upper end of the shaft 25. The general construction of :the motor is such as to provide for a maximum e fficiency and increased power,

While it is beheved that from the foregoing description, the nature and advantages of the invention will 'bereadilyapparent, I desire to have 'it understoodthat I do not limit myself to what is herein shown and described, and that such changes-may be resorted to when desired as fall within the scope of what is claimed.

What is claimed is 1. In a motor, a cylinder, a piston arranged to reciprocate therein, a crank shaft ofl' set with relation to the vertical axis of the cylinder a distance equal to the length of the crank of the shaft and'being arranged in alignment with one'si'de wall of the'cylinder, and a connecting rod associated with the piston and said crank shaft.

2. In a motor, a cylinder, a'pi'ston arranged. to reciprocate therein, a crankshaft offset with relation to the. cylinder to such a degree wher-ebysaidshaft will be. aligned with one side wall of the cylinder, a con necting rod associated with thesaid'shaft and piston, rotary intake and exhaustwalves, and means actuatedby the crank 'sha'ftifor controlling the movements of said"'valves for the purpose specified.

In testimony whereof I aflix my signature.

JESSE -H.GILES. 

